Final answer:
The provided text excerpts do not clearly state why Tante Jans moved in with the Ten Boom family; the context in which her situation is mentioned is missing from the excerpts provided.
Step-by-step explanation:
The reason Tante Jans moved in with the Ten Boom family is not explicitly detailed within the provided text excerpts. The text provided talks about the plight of Jews in occupied Europe during World War II, the Holocaust, and Anne Frank's family, as well as other unrelated story narratives.
The Ten Boom family did aid in hiding Jews from the Nazis during the war, but without more context or a specific reference to Tante Jans in the text, we cannot definitively conclude why she moved in with the Ten Boom family.